One of the shots shows Key naked apart from some strategically placed Big Macs and a large helping of McDonald's fries. Another similar shot has sushi covering her breasts and an octopus covering her groin.

And in one photo she's topless and biting on a cherry.

A spokesman for the Prime Minister said: "Steffi is an arts student completing her fine arts degree in Paris. The photographs were part of her curriculum work, and we are very proud of the work she is doing."

Key was 15 when her father came to power in 2008.

She left New Zealand as a teenager to study in France and Germany.

John Key doesn't like to discuss his children, but has previously said his daughter Skypes home so often he sees more of her now than he did when she was living at home in Auckland.